Interdependence of morphological characters of onion bulbs (Allium cepa L.)

Abstract

The paper presents morphologic characters of the bulb of the onion populations. As these populations have different origin, we studied basic characters of bulbs and their interdependence; number of opened juicy leaves, number of closed juicy leaves, number o hearts, number of buds and onion shape. Results are processed according to variance analysis and interdependence was determined by correlation's coefficient. It was found that he populations with a higher number of opened juicy leaves have more hearts and more buds in the bulb. Consequently, positive correlation between these characters was found Negative correlation was obtained between the number of closed juicy leaves, number of hearts and buds in the bulb. The share index of the studied populations ranged from 0.63 (flattened round) to 1.54 (cylindrićal bulbs), which means that this character of the bulb is in negative correlation with the number of hearts and buds in the bulb.